[(0,1),(1,2),(1,3),(3,4),(2,4),(0,5),(4,5),(5,6),(2,7),(6,7),(7,8),(3,9),(8,10),(9,11),(8,11),(10,12),(6,13),(10,14),(13,15),(12,16),(14,16),(15,17),(14,17),(12,18),(13,19),(11,19),(18,20),(15,20),(20,21),(17,21),(21,22),(16,22),(22,23),(23,24),(19,25),(24,25),(23,26),(18,26),(26,27),(9,27),(27,28),(24,28),(28,29),(29,30),(30,31),(29,31),(25,32),(32,33),(31,33),(30,34),(32,34),(33,35),(34,36),(35,37),(36,38),(35,38),(37,39),(36,39),(37,40),(40,41),(39,42),(42,43),(41,43),(40,44),(41,45),(43,46),(38,47),(42,48)]
[(0,1),(1,2),(2,3),(0,3),(3,4),(2,5),(4,6),(6,7),(4,7),(6,8),(7,9),(8,9),(8,10),(5,11),(9,11),(11,12),(10,12),(5,13),(10,13),(13,14),(14,15),(15,16),(1,16),(12,17),(16,17),(17,18),(14,19),(18,20),(15,20),(20,21),(19,21),(18,22),(21,23),(19,23),(23,24),(22,24),(22,25),(25,26),(24,27),(26,28),(25,29),(28,29),(27,30),(30,31),(26,32),(31,33),(29,33),(33,34),(34,35),(32,35),(32,36),(34,36),(27,37),(35,37),(36,38),(28,38),(38,39),(30,40),(31,40),(40,41),(41,42),(37,42),(39,43),(41,44),(43,45),(39,46),(43,47),(42,48)]
